Date: Fri, 28 Jun 2002 18:02:04 -0400 (EDT) From: "Andrew R. Reiter" <arr@watson.org> To: John David Duncan <jdd@greatschools.net> Cc: freebsd-smp@FreeBSD.ORG, freebsd-stable@FreeBSD.ORG Subject: Re: 2 xeons = 4 CPUs? Message-ID: <Pine.NEB.3.96L.1020628180134.21882K-100000@fledge.watson.org> In-Reply-To: <Pine.OSX.4.44.0206281443230.379-100000@dh8.office.greatschools.net>
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On Fri, 28 Jun 2002, John David Duncan wrote: :Hey, : :I just installed 4.6-RELEASE on a dual 1.8Mhz Xeon + Tyan S2720 :motherboard (a Relion 140 server from Penguin Computing, actually). :When I reboot with an SMP kernel, I see: : :CPU: Pentium 4 (2199.76-Mhz 686-class CPU) :CPU: Pentium 4 (2199.76-Mhz 686-class CPU) :CPU: Pentium 4 (2199.76-Mhz 686-class CPU) :CPU: Pentium 4 (2199.76-Mhz 686-class CPU) :SMP: AP CPU #1 Launched! :SMP: AP CPU #2 Launched! :SMP: AP CPU #3 Launched! : :That's twice as many CPUs as I think I have, each going 400Mhz faster. Is :this safe? Correct? Is it that hyperthreading stuff? Should I disable :it? You're seeing HT support in action. -- Andrew R. Reiter arr@watson.org arr@FreeBSD.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-smp" in the body of the message
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